Improvement in bottle-stoppers



P. EK MALMSTROM 8L P. E. DUMMER.

llmprovemen'f in B-ottle Stoppers.

N0.123,920. Patented Feb. 20,1872.

UNITED STATES PATENT OFFICE PETER MALMSTRM AND PAUL E. DUMMER, OE NEW YORK, N. Y.

IM PROVEMENT IN BOTTLE-STOPPERS.

Specification forming part of Letters Patent No. 123,920, dated February 20, 1872.

To all whom it may concern:

Be it known that we PETER E. MALMSTRM and PAUL E. DUMMER, both ofthe city, county, and State of New York, have invented a new and useful Improvement in Bottle-Stoppers; and we do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the saine, reference being had to the accompanying drawingforming part of this specification, in which drawing- Figure l represents a vertical central section of this invention. Fig. 2 is a side view of the same.

Similar letters indicate corresponding parts.

This invention consists in forming a recess in the top edge of abottle, into which is iitted tbe ends of an arched bridge-plate, said bridgeplate forming the guide for the valve-stem and a support for the reacting spring, all of which will now be set forth in detail.

In the drawing, the letter A designates a bottle, the mouth B of which is provided with a recess, a, near its outer end, forming a seat for a segmental bridge, E, which forms a guide for a stem, b, of a valve, D, on which is arranged a coiled-wire spring, C, so that by the action of said spring the valve is pressed up against the inner edge of the mouth B. The valve is composed ofthe metallic body c, which is just large enough to pass in through the mouth B, and which is provided with a circular groove, d, for the reception of a disk, e, of India rubber or other suitable material. If the bottle is tilled with an eftervescent liquid, such as carbonicacid water, the internal pressure forces the valve partly up into the mouth B, and, as the disk e becomes wed ged -in between the large end of the body c and the inner surface of the mouth, a tight joint is produced, which prevents the discharge of any part of the contents of the bottle; but if it is desired to pour out a portion or the Whole of said contents, the outer end ofl the stein b is pressed inward, which causes the valve to open, and

the liquid is free'to discharge from the bottle. v

The bridge E being selnispherical, and being placed on the outer edge ofthe neck of the bottle, does not materially obstruct the flow of the liquid from the same, and the spring C being placed above and bearing on said bridge serves to retain the same in position. The bridge E, being received in the recess a, does not interfere with the operation of iilling the bottle in the ordinary bottling machine, and at the saine time the valve can be easily held open by pressing with the linger on the end of the stem.

I do not broadly claim a valve which closes up against the inner surface of the mouth of a bottle by means of a spring arranged upon the valve-stem, said stein being guided in a bridge piece, the edges ot' which extend over the top ofthe bottle; but

What I claim as new, and desire to secure by Letters Patent, is-

Animproved bottle-stopper, composed ofthe bridge E, securedin an annular recess, a, stem b, spring C, and valve e e, all combined and arranged as herein shown and described.

This specification signed by me this 29th day of December, 1871.

PETER E. MALMSTROM. PAUL E. DUMMER.

Witnesses Y W. HAUEF,

E. F. KASTENEUBER. 

